Definitionen
1.AdjectiveNo longer in use or active, nor expected to be again.
2.AdjectiveNo longer in business or service, nor expected to be again; out of business.
3.AdjectiveSpecifically, of a process: having terminated but not having been reaped (by its parent or an inheritor), and thus still occupying a process slot. See also zombie, zombie process.
4.Adjective(of a language) No longer spoken.
5.AdjectiveDeceased, dead.
6.VerbTo make defunct.
7.NounThe dead person (referred to).